<template>
  <!-- 头部 -->
  <header class="header">
            <!-- 头部的第一行 -->
            <div class="top">
                <div class="container">
                    <div class="loginList">
                        <p>猿数码欢迎您！</p>
                        <p v-if="!userName">
                            <span>请</span>
                            <router-link to="/login">登录</router-link>
                            <router-link to="/register" class="register">免费注册</router-link>
                        </p>
                        <p v-else>
                            <a >{{ userName }}</a>
                            <a href="javascript:;" class="register" @click="logout">退出登录</a>
                        </p>
                    </div>
                    <div class="typeList">
                        <router-link to="/center/myorder" href="javascript:;" >我的订单</router-link>
                        <router-link to="shopcart" >我的购物车</router-link>
                        <router-link to="/test">我的猿数码</router-link>
                        <router-link to="/attrlisteners" href="javascript:;">猿数码会员</router-link>
                        <a href="javascript:;">企业采购</a>
                        <a href="javascript:;">关注猿数码</a>
                        <a href="javascript:;">合作招商</a>
                        <a href="javascript:;">商家后台</a>
                    </div>
                </div>
            </div>
            <!--头部第二行 搜索区域-->
            <div class="bottom">
                <h1 class="logoArea">
                    <router-link class="logo" title="猿数码" to="/home" target="_blank">
                        <img src="./images/logo.png" alt="">
                    </router-link>
                </h1>
                <div class="searchArea">
                    <form action="###" class="searchForm">
                        <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" @keyup.enter="goSearch"/>
                        <button class="sui-btn btn-xlarge btn-danger" type="button"  @click="goSearch">搜索</button>
                    </form>
                </div>
            </div>
        </header>
</template>

<script>

export default{
  // eslint-disable-next-line vue/multi-word-component-names
  name:"",
  
  data(){
    return {
        keyword:"",
    }
  },
  methods:{
    //搜索按钮的回调跳转
    goSearch(){
        //我需要把query参数也带过去(来自于搜索页面的用户事件点击目标)
        let location = {
            name:"search",
            params:{keyword:this.keyword ||undefined},
            query: this.$route.query,
        }
        
        this.$router.push(location) 
        //面试题1:params传参可以和path一起使用吗 
        //答:不可以
        //面试题2: params如何可传可不传,不传会出现什么bug
        //答: 在路由路径后补上? 不传url有错误,路径不完全.
        //面试题3:既然params可传可不传,那么如果传递空串如何处理bug
             //使用管道符进行逻辑或运算
        // this.$router.push({name:'search',params:{keyword:''||undefined},query:k:this.keyword.toUpperCase()})
      
    },
    //退出登录
    async logout(){
        //退出登录需要做的事情
        //1,通知服务器退出登录{清除一些数据,token}
        //2,清除项目当中的数据[userInfo,token]
        try{
          //成功
          await this.$store.dispatch("user/userLogout");
          //返沪idao首页
          this.$router.push('/home')
        }catch(error){
            alert('退出失败')
        }
    }
  },
  mounted(){
    //通过全局事件总线清除关键字
    this.$bus.$on('clear',() => { 
         this.keyword = "";
     })
  },
  computed:{
     //用户名信息
     userName(){
      return this.$store.state.user.userInfo.name;
    }
  }
}

</script>

<style lang='less' scoped>
 .header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;

            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;

                .loginList {
                    float: left;

                    p {
                        float: left;
                        margin-right: 10px;

                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }

                .typeList {
                    float: right;

                    a {
                        padding: 0 10px;

                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }

                }

            }
        }

        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .logoArea {
                float: left;

                .logo {
                    img {
                        width: 175px;
                        margin: 25px 45px;
                    }
                }
            }

            .searchArea {
                float: right;
                margin-top: 35px;

                .searchForm {
                    overflow: hidden;

                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;

                        &:focus {
                            outline: none;
                        }
                    }

                    button {
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>
